Heaven on Earth: The Rise and Fall of Socialism is a three-part PBS documentary, hosted by Ben Wattenberg and narrated by Henry Strozier. It chronicles the movement that rivaled the great religions in sweep and power, but ultimately failed to deliver the "Heaven on Earth" promised by its most ambitious advocates. There have been many accusations of right-wing bias, and indeed, many of the people involved in the production are involved directly with right-wing organizations.